binding = FormHelper.createBinding(this, "staff", "phoneNo", phoneNumberField, "text");
binding.setValidator(new PhoneNumberValidator());
bindingGroup.addBinding(binding);
binding = FormHelper.createBinding(this, "staff", "email", emailField, "text");
binding.setValidator(new EmailValidator());
bindingGroup.addBinding(binding);
binding = FormHelper.createBinding(this, "staff", "joinedDate", joinedDatePicker, "date");
bindingGroup.addBinding(binding);